diff --git a/aio/content/guide/animations.md b/aio/content/guide/animations.md
index 628851fd18..e63814e5bb 100644
--- a/aio/content/guide/animations.md
+++ b/aio/content/guide/animations.md
@@ -65,7 +65,7 @@ In the component file, add a metadata property called `animations:` within the `
 
 ## Animating a simple transition
 
-Let's animate a simple transition that changes a single HTML element from one state to another. For example, you can specify that a button displays either **Open** or **Closed** based on the user's last action. When the button is in the `open` state, it's visible and yellow. When it's the `closed` state, it's transparent and green.
+Let's animate a simple transition that changes a single HTML element from one state to another. For example, you can specify that a button displays either **Open** or **Closed** based on the user's last action. When the button is in the `open` state, it's visible and yellow. When it's in the `closed` state, it's transparent and green.
 
 In HTML, these attributes are set using ordinary CSS styles such as color and opacity. In Angular, use the `style()` function to specify a set of CSS styles for use with animations. You can collect a set of styles in an animation state, and give the state a name, such as `open` or `closed`.